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Bio Predict/Calculate Blood flows through a major artery at1.0 $\mathrm{m} / \mathrm{s}$ for $0.50 \mathrm{s},$ then at 0.60 $\mathrm{m} / \mathrm{s}$ for another 0.50 s througha smaller artery. (a) Is the average speed of the blood $0.80 \mathrm{m} / \mathrm{s},$greater than $0.80 \mathrm{m} / \mathrm{s},$ or less than 0.80 $\mathrm{m} / \mathrm{s} ?$ Explain. (b) Verifyyour answer to part (a) by calculating the average speed.

(a) Equal(b) 0.8$\frac{\mathrm{m}}{\mathrm{s}}$

Physics 101 Mechanics

Chapter 2

One-Dimensional Kinematics

Motion Along a Straight Line

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so problem 18 basic probably team was to know the average velocity of the blood flow and this system. Okay, we know that this system was composed by two parts. The first part. We have a velocity off one meters per second and we spend time that blood spend the time of 0.5 seconds. Okay, The second factory. Or if blood flows with the velocity of 0.6 meters per second. And you also spend the time of 0.5 seconds. Nice. Let's see, we know how to calculate every velocity, average velocities, just toto space cover divided by the Toto time that we spent took over the space. Okay, the time we have it's just one second. But we don't have this space. So we need to find a space so we can calculate the average velocity of the blood flow. Well, let's see. We can calculate this place off each party with each artery that the blood flows the first artery. Well, we have one meters per second. That's equal X one. There is the first space divided by 0.5. So here we have the first space equals two 0.5 meters Nice and the second after we have a velocity of 0.6. That's equal this X to the second space divided by zero point X. This is going to be extra. Ooh equals to 0.6 times 0.5. This is equals to 0.3 meters. Well, why we do this? Because we know how to calculate the average velocity for each part off each after it. So we coakley the space using the equation for average velocity from part one. And for part two, let's see now that we have the total space total space that's called in Delta X total space Delta X is going to be you 2.5 plus zero point tree. This is RICO's too zero point eight meters. Then we come back in here and calculate the average velocity off the blood flow. Lost much of the blood flow. It's going to be zero point eight divided by one. This is equal 0.8 meters per second. So what's the answers for the first item? The first item he wants to know if the velocity is equal lasts greater than 0.8. Well, the velocities equal in this second night in what is the value of the average velocity? 0.8 meters per seconds? That's the final answers. Thank you for watching.

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